Respiration apparatus.



- who are sic U NITED STATES PATENT OFF-ICE- PETER LORD, OF WORCESTER, MASSACHUSETTS; MARTHA V. LORD ADMINISTBATRIX OF SAID PETER LQBI DECEASED.

nasrmsrrou .Arraaam.

Specification Lotterl Patent.

Application filed July 10, 1905. Serial No. same.

To all whom it may concern;

Be it known that I, Psrsn Loan, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusctts, have invented a new and useful Respiration Apparatus, of which the following is a specification. v

The ob ect of this invention is to produce artificial respiration in a racticable wa which consists in supplying the patient with a supply of fresh air, and in alternately decreasing and increasing the air pressure on the patients chest or body so that the chest will rise and fall and the atient will be caused to breathe the supply 0 fresh air without muscular effort.

Further objects and advantages of the invention will appear hereinafter.

The invention may' be practiced in many ways.

have shown in the accompanying drawings forming art of this application for-patent, a form 0 apparatus for carrying out the invention.

The figure re resents a cross-section of an apparatus whic may be used in hospitals or built into buildings.

This apnpratus is designed for patients surgically. s

A designates a room or com artment which is madeair tight, and whie ispro vided with an air-tight-fitting door. In the.

side of the room is formed a 'su ratus or funnel B through w may be sup lied to the atient. the funnel lyis provide with a rubber cap C which has a hole'therein so that the cap can lying appait fresh air fit-over the face of the patient and cover his nose and mouth. Sometimes instead of using this funnel, I may use a fixture connected by by a flexible pipe to a source of air supp] and having a funnel at its end like the or na anesthetic funnel used with nitrous oxi etc- On the top of the compartment is formed a large cylinder D, fitting in which is a piston E. Journaled in brackets 10-l0 is a crank shaft 11, secured onwhich'is a pulley 12. The crank shaft 11 is connected by a pitman 13 to the piston E. A motor 14 18 arranged on -top of the compartment and is belted to drive the pulle 12. The motor is controlled by a suitabler eostat arranged inside of the or who are to be operated upon The end of compartment. The piston E is provided with a valve 15 on its top face and a valve 16 on its lower face. These valves are ke t normally closed by means of springs 17, t e tension of which can be adjusted by suitable screws.

In operation, the patient is placed in position so that his mouth and nose receive the. supply of fresh air at atmospheric pressure. The motor is started in operation and is adjusted to reciprocate the piston E at about the number of respirations desired, say twenty per minute. As the piston E moves up the air in the compartment is rarefied; that is, say it is reduced from l5-lbs. ressure to 13-lbs. pressure. This will lift t e chest of the patient and will cause him to inhale the expel the air from is lungs. .By" adjusting the valves the desired pressures can be obtained in the compartment. patient will be caused to breathe without muscular effort, and by ad'usting the motor the rate of breathin can e established to suit the conditions 0 the case.

The apparatus is particularly useful in cases. where artificial respiration is of advantage. vantageously employed when operations are to be erformed and the patient put under the in uence of anesthetics. v The funnel B is provided with a slide 18 covering .an o ening. The anesthetic can be applied to t e patient through this opening. By the use of the apparatus before deto be made of very large size. To performthis function the following apparatus is provided. An additional bracket l9is secured to the top of the compartment. A-doublo throw crankshaft 20 is 'ournaled insaid bracket 19 andin the mid le bracket 10'. A

Patented Sept. 22,

The apparatus may be also ad-' scribed, the patient s breathing can be kept In this way the clutch 2] is provided so that tl1is.crankshaft can be connected to thecrank-shaft 1,110 mm therewith. f

' 24 to one throwof the crank-shaft 20. A

i iva'lve ".25 is provided in the, bottom of the the operation thereof.

cylinder 22, and 'a-valve 26 is arranged in the p ston 23.

These valves are provided with springs so that 'tlie rise and fall of pressure in the compartment will not interferewith Thus it will be seen' that the cylinder 22 and piston 23 form a suction pump so that a volunie of air will be \vitl'idrawn from the room for each revolution ofthe crank-shaft. 27 designates another cylinder fitted in which is a piston 28 which is connected by 'pitman 29 to the other throw of the crankshaft '20., A tube 30 is com'iected to the bottom of the cylinder '27and is carried down to the bottom of the compartment. 'Valves 3] and 32' are arranged in the bottom of the cylinder 27 and in the piston 28 as'shown. These valves are also rovided with suitable springs so that the rise and fallof pressure in the compartment froni the piston E will not affect the operation -of-- the same It will be noticed that thi's'arrangement forms a force pump for forcing fresh air into the bottom of the compartment, and that the pistons 23 and '28 will reciprocate in opposition in their cylinders. This arrangement is provided so that just as much air will be forced in as is pushed out, so that the operation of these fall of air pressure from pistons will not affect the air-pressure in the compartment, and will not affect-the rise andthe reciprocatio'ns of the piston E.

-Many other forms of mechanism for racticing my invention may be devised wit out departin from the scope of my invention as ex resseg in the claims.

avin thus fullv described my'invention,

what I c aim and desire to secure by Letters- Patent of the United States is 1. In an apparatus of the character described, the combination of a closed compartment, a 'motor mounted thereon, a

crank-shaft supported by the compartment 0 rated thereby, whereby the pressure in, i,

1e compartment may be alternately in'- creased and diminishe ably connected with the crank-shaft for changing the air in the compartment without aflecting the pressure there-m.

' 2. In an apparatus for producing respiration the combination of a closed compartr ment, means for supplying fresh air to a patient placed therein, means for increas and decreasin the air pressure therein, an means for withdrawing air from and forcing air into said com artinent without affectingthe rise and fall o the pressure therein.

3. In an apparatus for producing respiration the combination of a closed com artment, a power-driven 'ump connected t ereto to increase and iminish the pressure therein, a suction pump, and a forcing pum also connected therewith, saidsuction an d, and means detach-I i forcing pumps being set to work' oppo'si- I5 tion.

4. An apparatus for producing respiration comprising a closed compartment, a large cylinder connected therewith, apiston ar' ranged in said cylinder, a motor for reciprocating said piston, asuction pump and a force pump also connected therewith and set.-.

to act in opposition, and an inlet pi e for the force pump extending down to the otton'rof the compartment.

In testimon whereof I have hereunto set my hand, in t 'e' presence of two subscribing H witnesses. v y

PETER LORD; Witnesses?- --PHILLP W. Sov'rnon'n,

E. M. ALI-E i" 

